However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
To obtain experience, you can volunteer or work as a wildlife biologist for a state or federal agency such as the U.S. Fish and Wildlife Service or National Park Service. Another way to meet the experience requirement is to complete either a master's or Ph.D. degree program in wildlife biology or a related subject. A master's degree counts for one year of experience, a Ph.D. counts for two years, and a person who holds both degrees is granted the equivalent of three years of experience.
Rating Newest Oldest. Best Answer: You can become a marine biologist or an oceanographer with just 4 years of college. What I would suggest if you are really interested in this field is to volunteer every chance you get.eport Abuse. Four years of undergrad. After that you can be a marine biologist... but you need three or four years of grad school to get your doctorate.